Whenever you are aware of irregular signs on your automobile, you are right to be concerned, because a car represents a big annual budget and surprising breakdowns don’t lower the bill. So what if you feel like you have a leaking injector on your Kia Stronic? You likely figured it out thanks to black/oily drips along your engine unit, or a troubled idle, or uncommon black smoke. These three symptoms are the main symptoms of a leaking injector. As this problem can bring about more significant engine problems on your car, we thought we would publish this article to help you confirm the failure of a leaking injector and deal with it correctly. To achieve this, we will first of all look at the case of gasoline injectors and then at those of diesel injectors Kia Stronic.
Leaking injector on my petrol Kia Stronic
It is essential to know that the injectors on petrol and diesel engines are different, actually, the difference in combustion between these two kind of engines makes the injection different. The main difference lies in the pressure experienced by the injectors, on a petrol engine it will vary between 3.5 bars for indirect injection and 120 bars for indirect injection.
Leaking injector on a petrol Kia Stronic: The different leaks
It should be known that injector leaks on a Kia Stronic equipped with a petrol engine are rather rare. This is due to the much lower pressure in the petrol intake systems. However, there are two kind of leaks:
- Leakage from the top of the injector:
It is possible that you have a leak from the top of the injector, this is the component that is attached to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
At last, you may encounter a leak coming from the lower part of the injector of your car, this one will appear from the junction with the engine and not with the rail as seen previously.
Leaking injector on my diesel Kia Stronic
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure generates very high pressure in the engine, as do the injectors. On these models, the pressure is more than 10 times higher than on the direct injection of car petrol engines, reaching 1800 to 2000 bars.
Leaking injector on diesel Kia Stronic: The different leaks
In the case of leaking diesel injectors on your Kia Stronic, there are three different kind of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform with time, usually the leak will be at the clamping point. - Injector return leakage:
As its name indicates, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Kia Stronic will be brought on by an O-ring or its plastic tip that leaks. - Injector base leak:
This injection leak is one of the most bothersome, it is the junction between the engine and the injector nose that leaks at a copper seal, you should encounter an air noise and a compression loss. - If after examining you have oil leaking but it does not come from your injectors, we advise you to read this article on the existence of oil leaking on your Kia Stronic.
Leaking injector on my Kia Stronic, how to fix the leak
And finally, we’re going to look at how to fix a leaking injector on your car. Frequently a leak is connected, as we have seen prior to this, to a worn seal because of the pressures suffered. But think that the pressure in the circuit is gigantic, specifically on diesel engines. So you will have to take some precautions:
- Lower the pressure before any work is conducted…
- Covering you to avoid the risk of fuel spillage
- NEVER work on a running diesel engine injector.
Regarding the repair part of your leak, it will very often be restricted to changing the seals that have failed:
- Locate the source of the leak
- Dismantle the injector in question
- Change the corresponding seal kit
- Reassemble the assembly and tighten with a torque wrench in respect with the manufacturer’s standards.
In all cases, these interventions are not specifically complicated, but if you have the slightest uncertainty in the treatment of your injector that leaks on your Kia Stronic, we advise you to get closer to your motor mechanic to avoid any bad handling that could severely harm the condition of your Kia Stronic.
In the event that you have any additional questions about the Kia Stronic, do not hesitate to consult our Kia Stronic category.
